chore: Refactor backlinks and revisions (#1611)

* Update backlinks service to not rely on revisions

* fix: Add missing index for finding backlinks

* Debounce revision creation (#1616)

* refactor debounce logic to service

* Debounce slack notification

* Revisions created by service

* fix: Revision sidebar latest

* test: Add tests for notifications

server/api/documents.js

@@ -870,6 +870,8 @@ router.post("documents.update", auth(), async (ctx) => {
     throw new InvalidRequestError("Document has changed since last revision");
   }
 
+  const previousTitle = document.title;
+
   // Update document
   if (title) document.title = title;
   if (editorVersion) document.editorVersion = editorVersion;
@@ -926,6 +928,21 @@ router.post("documents.update", auth(), async (ctx) => {
     });
   }
 
+  if (document.title !== previousTitle) {
+    Event.add({
+      name: "documents.title_change",
+      documentId: document.id,
+      collectionId: document.collectionId,
+      teamId: document.teamId,
+      actorId: user.id,
+      data: {
+        previousTitle,
+        title: document.title,
+      },
+      ip: ctx.request.ip,
+    });
+  }
+
   document.updatedBy = user;
   document.collection = collection;